136530138258 has 24 divisors (see below), whose sum is σ = 306015828300. Its totient is φ = 43940733984.

The previous prime is 136530138209. The next prime is 136530138289. The reversal of 136530138258 is 852831035631.

136530138258 is a `hidden beast` number, since 1 + 3 + 65 + 301 + 38 + 258 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 132050111769 + 4480026489 = 363387^2 + 66933^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130775473 + ... + 130776516.

Almost surely, 2^136530138258 is an apocalyptic number.

136530138258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

136530138258 is an abundant number, since it is smaller than the sum of its proper divisors (169485690042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136530138258 is a wasteful number, since it uses less digits than its factorization.

136530138258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261552026 (or 261552023 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 136530138258 in words is "one hundred thirty-six billion, five hundred thirty million, one hundred thirty-eight thousand, two hundred fifty-eight".